well, after some other checks, it turned out, that the message string is not read corectly from the .properties file string in .properties file: mtr.test.param.format=string {1} currency {0,number,#.#} integer {2,number,integer} date {3,date,short}. when I output the message string in the HTML page, <p>#{messages['mtr.test.param.format']}</p> it is rendered, as: anonymous wrote : string {1} currency {0} integer {2} date {3}. any idea why? or can you at least tell me, where the problem is? is this a JSF issue, or might it be a problem with (JBoss) or SEAM? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4100597#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...